Hi Veda,
Nothing too odd jumps out at me here.
1. For a more current example of doing gPPI, consider
the class data:
[
afni.nimh.nih.gov]
2. Is this a single run of 360 TRs, or multiple runs?
If it is a single run, polort 1 is way too small to
model drifts over 720 seconds, and does not match
using "-polort A" in 3dDeconvolve.
If it is multiple runs, then 3dTfitter and waver should
be applied per run.
3. How long are the stimulus events?
- rick